406 LAND AND FRRSHWATER 



the sutiiral tul)e wliicli is moderately Ion,;? ; aperture nearly circular, 

 oblique; peristome double and mucli thickened, slightly reflected. 



Size : maj. diara. 6 7 ; alt. axis 3-5 mm. 



From Moditouii<?, Pegu, there is an Ahjams represented by five 

 specimens. No. 182 of the Blanford Collection, which Blanford 

 has named A. sce/iiicus. It is similar in every way to his 

 A. anonymus, except in the sculpture being finer and the umbilicus 

 slightly more open, and can only be considered a variety. 



Altc^us AKMiLLATtJs, Bs. (Plate CLI. figs. 3, 3 a.) 



Benson, A. M. N. H. ser. 2, xvii. (1S56), p. 227; Pfr. Mon. 

 Pneum. ii. p. 37 ; W. Blanford, A. M. X. H. June 1864, p. 4r)8, 

 in sec. vi. ; Hanley & Th, Conch. Ind. 1870, p. 38, pi. xciii. fig. 10; 

 Theobald, Cat. Supp. p. 39 ; (j. NeviU, Hand-1. 1878, p. 293, Thyet- 

 myo, W. Blf. 



Specimen figured No. 71, 1906.4.4, Type Blf. Coll., B.M. 



Original description : — " Testa umhiUccttn, depresso-turhinafa, 

 coHulata ; spira conoidea, sntura impressa, apice obtaso ; anfractihns 

 31 convexis, ultimo ad latus inflato, confertins costulato, turn con- 

 stricto, antice tiimido, Iceviori, tulndo suturali hrevi, ah ajyertura 

 remoto, munito ; apertura ohliqua circulari, peristomute dvplici, in- 

 terno valde porrecto, contbtuo, margine simplici, extus striata, exteriori 

 expanso, reJJexiusculo ; umbilico suhaperto. Operculo ? 



" Diam. major 2, minor 1|, axis 1^ mill. 



" Hah. ad Thyet-Mio cum prtEcedente. 



" The exterior expanded peristome, forming a conspicuous collar 

 round the porrect interior portion, is the most prominent character 

 in this very minute species. 



" The only specimen received is in a weathered condition, and 

 so much bleached that the colour of the perfect shell cannot be 

 ascertained. 



•' Five new forms have here been added to this curious restricted 

 genus, which now contains nine species, three of which are Hima- 

 layan, one Cochin-Chinese, and one {A. spiraceUum, A. & R.) from 

 Borneo. The Ultra-Gangetic region must at present be considered 

 the headquarters of the type." 



Altc^efs av^, "W. Blanford. (Plate CLI. fig. 6.) 



J. A. S. B. xxxii. pt. 2 (1863), p. 323; H. & T. Conch. Ind. 

 pi. 94. figs. 8, 9, 10; Theobald, Cat. Supp. 1876, p. 39; Nevill, 

 Hand-1. i. 1878, p. 293. 



Specimen figured No. 61, 1906.4.4, Type Blanford Coll., B.:M. 



Original di.'Scription :—"■ ^heW depressed, openly umbilicated, 

 thin, closely costulated throughout, more strongly on the infiated 

 portion of tbe last whorl, white or light amber in colour. Spire 

 very depressly conoid, apex blunt, suture impressed. Whorls 4, the 

 last very little infiated at the side, then moderately constricted, 

 constriction rather long, swollen in the centre, indistinctly costu- 

 lated. Sutural tube short, about ]| mm. in length. Aperture 



